Carel easy User Manual

31
ENG
easy/easy compact/easy split +030220791 - rel. 3.2 - 13.07.2010
5. TABLES OF ALARMS AND PARAMETERS
5.1 Table of alarms and signals
When an alarm is activated, the display shows the corresponding message
that  ashes alternating with the temperature; if  tted and enabled, the
buzzer and the alarm relay are also activated.
All the alarms have automatic reset (that is, they stop when the causes
are no longer present), except for alarm ‘CHt’ which has manual reset
(instrument on/o using the UP button or by disconnecting the power
supply). Pressing the SET button mutes the buzzer, while the code
displayed and the alarm relay only go o when the causes of the alarm
have been resolved. The alarm codes are shown in the table below:
IA  ashing
immediate or delayed alarm from multifunction digital input:
• check the multifunction input and parameters A4 and A7.
dOr  ashing
open door alarm:
• check the multifunction input and parameters A4 and A7.
LO  ashing
low temperature alarm. The probe has measured a temperature lower
than the set point by a value that exceeds parameter AL:
• check parameters AL, Ad and A0.
The alarm is automatically reset when the temperature returns within the
set limits (see parameter AL).
HI  ashing
high temperature alarm. The probe has measured a temperature higher
than the set point by a value that exceeds parameter AH.
• check parameters AH, Ad and A0.
The alarm is automatically reset when the temperature returns within the
set limits (see parameter AH).
EE displayed during operation or on power-up
unit parameter reading error. See Data errors.
Note: in easy split controllers, when starting control (powering up
the controller and/or switching from OFF status), the high
temperature alarm signal is disabled until the  rst time the compressor
stops, to avoid false signals. The  rst time the compressor stops indicates
that the set temperature has been reached, and, consequently, the high
temperature alarm signal is enabled. This function is always active.
The possible alarm codes are shown in the following table:
alarm
code
buzzer and
alarm relay
LED alarm description reset ENABLE ALARM parameters
involved
easy easy
compact
easy
split
E0 active ON probe 1 error= control automatic -

E1 not active ON probe 2 error= defrost automatic d0= 0 / 1 / 4, F0= 1

E2 not active ON probe 3 error= condenser/product automatic easy, easy compact [A4=10/11]
easy split [A4=13/14]

-

IA active ON external alarm automatic [A4 = 1] [+A7]

-

dOr active ON open door alarm automatic easy, easy compact [A4=7/8][+A7]
easy split [A4=7/8/10/11][+A7]

-

LO active ON low temperature alarm automatic [AL] [Ad]

HI active ON high temperature alarm automatic [AH] [Ad]

EE not active ON unit parameter error not possible -

EF not active ON operating parameter error manual -

Ed not active ON defrost ended by timeout on  rst defrost ended
correctly
[dP] [dt] [d4] [A8]

dF not active OFF defrost running automatic [d6=0]

cht not active ON dirty condenser pre-alarm automatic easy, easy compact [A4=10]
easy split [A4=13]

-

CHt active ON dirty condenser alarm manual easy, easy compact [A4=10]
easy split [A4=13]

-

EtC not active ON clock alarm by setting the time if bands are active

-

SrC (easy
split only)
not active ON maintenance request signal manual,
set HMr=1
[HMP] [HMd] [HMr] - -

Table 5.a
5.2 Description of the main signals and
alarms
LED  ashing
The activation of the corresponding function is delayed by a timer,
awaiting an external signal or disabled by another procedure that is
already in progress. e.g. if is a continuous cycle in progress and a defrost
is called, the latter will remain pending until the end of the continuous
cycle, and the corresponding LED (defrost) will  ash.
E0 steady or  ashing
control probe error:
• probe not working: the probe signal is interrupted or short-circuited;
• probe not compatible with the instrument;
The alarm signal E0 is steady if it is the only active alarm (the temperature
value is not displayed), while it  ashes if other alarms are active or the
second probe is displayed.
E1  ashing
evaporator probe or food conservation probe error:
• probe not working, the probe signal is interrupted or short-circuited;
• probe not compatible with the instrument;
E2  ashing
condenser probe or food conservation probe error:
• probe not working, the probe signal is interrupted or short-circuited;
• probe not compatible with the instrument;

Carel easy Specifications

General

Brand	Carel
Model	easy
Category	Thermostat
Language	English